Parameters forming part of the Weather and Geophysical Extremes Digital Twin (DT) are investigated here. See the encodings below, which are current for ecCodes 2.3233.10.

Warning

title	Additional keys

Please note that additional keys are often necessary in addition to the base parameter definition below. For example for:

statistical processing (e.g. time interval of processing)
level information (e.g. a given pressure level, say 300 hPa)

Legend:

...

Data availability

Currently only the fields in Secn 1.1.1 and 1.1.2 are available on the LUMI databridge as part of the first production-like ExtremesDT runs.

This is currently in class=rd,expver=i7yv,stream=oper,type=fc

Info

title	Additional keys

Please note that additional keys are often necessary in addition to the base parameter definition below. For example for:

statistical processing (e.g. time interval of processing)
level information (e.g. a given pressure level, say 300 hPa)

Any entry with localTablesVersion=1 should not be used in production outside ECMWF.

Legend:

Parameter ready for GRIB2 archiving

Parameter with clarifications required for GRIB2 archiving

Parameter which needs to be created/modified for GRIB2 archiving

Contents:

Table of Contents

maxLevel	3

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Time resolution: Hourly.

Contents:

Table of Contents

maxLevel	3

Instantaneous encodings

Fields on a single level or surface

Atmosphere

...

param Id

param Id

name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments

165

10 metre U wind component

10u

m s**-1

0

2

103

0

10

GG

31	Sea ice area fraction	ci	(0 - 1)	10	2	0	1		GG
34	Sea surface temperature	sst	K	10	3	0	1		GG
78	Total column cloud liquid water	tclw	kg m**-2	0	1	69	1	8	GG
134	Surface pressure	sp

166

10 metre V wind component

10v

m s**-1

0

2

3

103

0

10

GG

167

2 metre temperature

2t

K

0

103

0

2

GG

151

Mean sea level pressure

msl

Pa

0

3

0

101

1

GG

134

Surface pressure

sp

Pa

136

Total column water

tcw

kg m**-2

0

3

1

0

51

1

8

GG

136

137	Total column vertically-integrated water vapour

tcw

tcwv

kg m**-2

0

1

51

64

1

8

GG

168

2 metre dewpoint temperature

2d

151

Mean sea level pressure

msl

Pa

K

0

3

6

103

0

2

101

GG

228235

Most-unstable CAPE

mucape

165

10 metre U wind component

10u

m s

J kg

**-1

0

7

6

17

GG.
Used rather than 59; cape, which is phased out.

~~228236~~

~~Most-unstable CIN~~

~~mucin~~

2	2	103	0	10						GG
166	10 metre V wind component	10v	m s

J kg

**-1

0

2

7

3

103

7

0

17

228218

Convective rain rate

crr

kg m**-2 s**-1

0

1

76

1

GG

~~228003~~

~~Friction velocity~~

~~zust~~

~~m s**-1~~

10

0

17

GG.
Not yet supported by ExtremesDT IFS.

10

GG

.
Used rather than 228001; cin, which is phased out.
Not yet supported by ExtremesDT IFS.


167	2 metre temperature	2t	K	0	0	0	103	0	2	GG
168	2 metre dewpoint temperature	2d	K	0	0	6	103	0	2	GG

228029

Instantaneous 10 metre wind gust

i10fg

m s**-1

0

2

22

103

0

10

GG

~~228050~~

~~Instantaneous total lightning flash density~~

~~litoti~~

228218

Convective rain rate

crr

kg m

km

**-2

day

s**-1

0

17

1

4

76

1

8

GG

.

Not yet supported by ExtremesDT IFS.

228219

Large scale rain rate

lsrr

kg m**-2 s**-1

0

1

77

1

GG

~~228221~~

~~Large scale snowfall rate water equivalent~~

~~lssfr~~

228235

Most-unstable CAPE

mucape

J kg

kg m**-2 s

**-1

0

1

7

56

6

1

17

GG.

Not yet supported by ExtremesDT IFS

Used rather than 59; cape, which is phased out.
260015	Precipitation type	ptype	code table (4.201)	0	1	19									GG

31

Sea ice area fraction

~~164~~

~~Total cloud cover~~

~~tcc~~

ci

~~(0 - 1)~~

0

10

6

~~192~~

2

1

0

8

1

GG.

34

Sea surface temperature

sst

K

10

ECMWF unit. Not yet supported by ExtremesDT IFS.
~~3020~~	~~Visibility~~	~~vis~~	m

3

0

1

19

GG

~~260227~~

~~Reflectance in 0.6 micron channel~~

~~rfl06~~

%

3

1

9

GG.
Not yet supported by ExtremesDT IFS.

~~260228~~

~~Reflectance in 0.8 micron channel~~

~~rfl08~~

%

3

1

10

0

~~231013~~

~~Reflectance in 0.4 micron channel~~

~~rfl04~~

%

3

1

30

GG.
Not yet supported by ExtremesDT IFS.

~~103~~	0	10						GG
~~162071~~	~~Vertical integral of eastward water vapour flux~~	~~viwve~~	~~kg m-1 s-1~~	0	1	~~150~~	1		8	GG
~~162072~~	~~Vertical integral of northward water vapour flux~~	~~viwvn~~	~~kg m-1 s-1~~	0	1	~~151~~	1		8	GG
~~228003~~	~~Friction velocity~~	~~zust~~	~~m s**-1~~	10	0	17

GG.
Not yet supported by ExtremesDT IFS.

~~260510~~

~~Cloudy brightness temperature~~

~~clbt~~

K

3

1

14

GG.
Needs Simulated Satellite mode on...

~~228050~~	~~Instantaneous total lightning flash density~~	~~litoti~~	~~km-2 day-1~~	0	17	4	1			8					GG. Not yet supported by ExtremesDT IFS.
~~228164~~	~~Total Cloud Cover~~	~~tcc~~	%	0	6	1	1			8					GG. WMO unit. Not yet supported by ExtremesDT IFS.

~~164~~

~~Total cloud cover~~

~~tcc~~

~~(0 - 1)~~

0

6

~~192~~

1

~~228221~~

~~Large scale snowfall rate water equivalent~~

~~lssfr~~

~~kg m**-2 s**-1~~

0

1

56

8

1

GG.

ECMWF unit.

Not yet supported by ExtremesDT IFS.

78

Total column cloud liquid water

tclw

~~228236~~

~~Most-unstable CIN~~

~~mucin~~

~~J kg~~

kg m

**-

2

1

0

1

7

698

7

1

17

GG

137

Total column vertically-integrated water vapour

tcwv

kg m**-2

0

1

64

1

8

GG

~~162071~~

~~Vertical integral of eastward water vapour flux~~

~~viwve~~

~~kg m**-1 s**-1~~

0

1

~~150~~

1

8

GG

~~162072~~

~~Vertical integral of northward water vapour flux~~

~~viwvn~~

~~kg m**-1 s**-1~~

0

1

~~151~~

1

8

GG

~~3020~~

~~Visibility~~

~~vis~~

m

0

19

0

~~103~~

0

10

GG

Wave

. Used rather than 228001; cin, which is phased out. Not yet supported by ExtremesDT IFS.
~~231013~~	~~Reflectance in 0.4 micron channel~~	~~rfl04~~	%	3	1	30	GG. Not yet supported by ExtremesDT IFS.
~~260227~~	~~Reflectance in 0.6 micron channel~~	~~rfl06~~	%	3	1	9	GG. Not yet supported by ExtremesDT IFS.
~~260228~~	~~Reflectance in 0.8 micron channel~~	~~rfl08~~	%	3	1	10	GG. Not yet supported by ExtremesDT IFS.
~~260510~~	~~Cloudy brightness temperature~~	~~clbt~~	K	3	1	14	GG. Needs Simulated Satellite mode on...

Wave

Time resolution:Hourly.Time resolution:3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-hourly.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
140221	Mean zero-crossing wave period	mp2	s	10	0	28									GG

140230

Mean wave direction

mwd

degrees
140229
Significant height of combined wind waves and swell
swh
m
10
0
3
14
101

GG
140232
140230
Mean wave
period
direction
mwp
mwd
s
degrees
10
0
15
14

GG
140231
Peak wave period
pp1d
s
10
0
34

GG
140229
Significant height of combined wind waves and swell
swh
m
140232
Mean wave period
mwp
s
10
0
3
15
101

GG

Ocean

Time resolution:3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-hourly. Hourly.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
262121	Vertically-integrated heat content in the upper 300 m	hc300m	J m**-2	10	4	22	160	0	0	160	0	300			O2D

Fields on pressure levels

Time resolution:3 hourly for fields kept throughout phase 1 – or hourly for 1 or 2 days only. Ultimate goal to store sub-hourly Hourly.

21 pressure levels: (1, 2, 3, 5, 7, 10, 20, 30, 50, 70, 100, 150, 200, 250, 300, 400, 500, 700, 850, 925, 1000)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
130

155
Temperature
Divergence
133
Specific humidity
q
kg kg**-1
0
1
t
d
s**-1
0
2
13
100
SH
156
Geopotential height
gh
gpm
0
3
5
100
GG
K
0
0
0
100

GG
157
Relative humidity
r
%
0
1
1
100
GG
130
Temperature
t
K
0
0
0
100
GG
131
U component of wind
u
m s**-1
0
2
2
100
GG
132
V component of wind
v
m s**-1
0
2
3
100
GG
138
Vorticity (relative)
vo
s**-1
0
2
12
100
SH

Fields on model levels

Atmosphere

...

131	U component of wind	u	m s**-1	0	2	2	100	GG
132	V component of wind	v	m s**-1	0	2	3	100	GG
133	Specific humidity	q	kg kg

137 model levels: (137, 136, ..., 1) - L137 model level definitions

param Id

name

short Name

units

discipline

parameter Category

parameter Number

type Of First Fixed Surface

scale Factor Of First Fixed Surface

scaled Value Of First Fixed Surface

type Of Second Fixed Surface

scale Factor Of Second Fixed Surface

scaled Value Of Second Fixed Surface

type Of Statistical Processing

local Tables Version

comments

77Eta-coordinate vertical velocityetadots
**-1
0
2
1
32
0
105
GG. Not in official portfolio.
260238Geometric vertical velocitywzm
100

GG
. Not in official portfolio.248Fraction of cloud covercc(0-1)0632
105
138
Vorticity (relative)
vo
s**-1
0
2
12
100

SH
155
Divergence
d
s**-1
0
2
9
105
GG. Not in official portfolio. Replaces 120; Exper. product
247Specific cloud ice water contentciwckg kg**-1
13
100

SH
156
Geopotential height
gh
gpm
0
3
5
100

GG
157
Relative humidity
r
%
0
1
84
1
105
100

GG
. Not in official portfolio.

Fields on model levels

Atmosphere

Time resolution: Hourly.

137 model levels: (137, 136, ..., 1) - L137 model level definitions

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments

246Specific cloud liquid water contentclwckg kg**-10183
105
GG. Not in official portfolio.
133Specific humidityqkg kg**-1010
105
GG. Not in official portfolio.
75 Specific rain water content crwc kg kg**-1 0 1 85
105

GG. Not in official portfolio.
76 Specific snow water
contentcswckg kg**-10186
105
GG. Not in official portfolio.
130TemperaturetK000
content cswc kg kg**-1 0 1 86
105

GG. Not in official portfolio.
131U component of windum
77 Eta-coordinate vertical velocity etadot s**-1 0 2
2
32
105

GG. Not in official portfolio.
132V component of windvm s**-1
130 Temperature t K 0
2
0
3
0
105

GG. Not in official portfolio.
135Vertical velocitywPa
131 U component of wind u m s**-1 0 2
8
2
105

GG
. Also called omega
. Not in official portfolio.

Sea-ice/snow/soil

...

132	V component of wind	v	m s**-1	2	3	105	GG. Not in official portfolio.
133	Specific humidity	q	kg kg**-1	1	0	105	GG. Not in official portfolio.
135	Vertical velocity	w	Pa s**-1	2	8	105	GG. Also called omega. Not in official portfolio.
246	Specific cloud liquid water content	clwc	kg kg**-1	1	83	105	GG. Not in official portfolio.
247	Specific cloud ice water content	ciwc	kg kg**-1	1	84	105	GG. Not in official portfolio.
248	Fraction of cloud cover	cc	(0-1)	6	32	105	GG. Not in official portfolio.
260238	Geometric vertical velocity	wz	m s**-1	2	9	105	GG. Not in official portfolio. Replaces 120; Exper. product

Sea-ice/snow/soil

Time resolution: Hourly.
4 model levels: (1, ..., 4)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
260360	Soil temperature	sot	K	2	3	18	151	0	N-1	151	0	N			GG. For soil layer N. Replaces: 139; stl1 170; stl2 183; stl3 236; stl4

param Id

name

short Name

units

discipline

parameter Category

parameter Number

type Of First Fixed Surface

scale Factor Of First Fixed Surface

scaled Value Of First Fixed Surface

type Of Second Fixed Surface

scale Factor Of Second Fixed Surface

scaled Value Of Second Fixed Surface

type Of Statistical Processing

local Tables Version

comments

260360

Soil temperature

sot

K

2

3

18

1510015101GG.
Replaces 139; stl1
260360
Soil temperature
sot
K
2
3
18
1510115102GG.
Replaces 170; stl2
260360
Soil temperature
sot
K
2
3
18
1510215103GG.
Replaces 183; stl3
260360
Soil temperature
sot
K
2
3
18
1510315104
GG.
Replaces 236; stl4
260199
Volumetric soil moisture
vsw
m**3 m**-3
2
0
25
151
0
0
151
0
1
GG.
Replaces 39; swvl1
260199
Volumetric soil moisture
vsw
m**3 m**-3
2
0
25
151
0
1
151
0
2
GG.
Replaces 40; swvl2
260199
Volumetric soil moisture
vsw
m**3 m**-3
2
0
25
151
0
2
151
0
3
GG.
Replaces 41; swvl3
260199
Volumetric soil moisture
vsw
m**3 m**-3
2
0
25
151
0
3
N-1
151
0
4
N

GG.
For soil layer N.
Replaces:
39; swvl1
40; swvl2
41; swvl3
42; swvl4

Fields on height levels

Time resolution

...

:Hourly.

Currently 100m only. These are only for height levels >10m to preserve backwards compatibility with longstanding model fields (2t, 10u, 10v,...)

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
228246	100 metre U wind component	100u	m s**-1	0	2	2	103	0	100						GG
228247	100 metre V wind component	100v	m s**-1	0	2	3	103	0	100						GG

Mean encodings

Fields on a single level or surface

...

Time resolution: 6 hourly means.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
228058	Averaged total lightning flash density in the last 6 hours	litota6	km-2 day-1	0	17	4	1			8			0		GG

Accumulated encodings

Fields on a single level or surface

Atmosphere

Time resolution: hourly accumsHourly accumulations since the start of the forecast, i.e. 0-1, 0-2, 0-3, ..., 0-96.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of

Statistical Processing
local Tables Version
comments
205
Runoff
ro
m
2
0
201
1
1
GG.
ECMWF unit.
231002
Runoff water equivalent
rowe
kg m**-2
2
0
42
Statistical Processing
local Tables Version
comments
142
Large-scale precipitation
lsp
m
0
1
196
1

1
1
GG.
WMO
ECMWF unit.
228
144
Total precipitation
Snowfall
tp
sf
m of water equivalent
0
1
193
198
1

1
1
GG.
ECMWF unit.
228228
Total Precipitation
tp
169
Surface short-wave (solar) radiation downwards
ssrd
J
kg
m**-2
0
1
4
52
7
1

1

GG
.
WMO unit.
231001
Accumulated freezing rain water equivalent
fzrawe
175
Surface long-wave (thermal) radiation downwards
strd
J
kg
m**-2
0
1
5
67
3
1

1

GG
.
WMO unit.
228216
Accumulated freezing rain
fzra
m
176
Surface net short-wave (solar) radiation
ssr
J m**-2
0
1
4
194
9
1

1
1

GG
.
ECMWF unit.
177
Surface net long-wave (thermal) radiation
str
J
228143
Convective precipitation
cp
kg
m**-2
0
1
5
37
5
1

1

GG
180
178
Time-integrated eastward turbulent surface stress
ewss
Top net short-wave (solar) radiation
tsr
J
N
m**-2
s
0
2
4
62
9
1
8

1

GG
.
3062
179
Large-scale precipitation
lsp
Top net long-wave (thermal) radiation
ttr
J
kg
m**-2
0
1
5
54
5
1
8

1

GG
.
WMO unit.
142
Large-scale precipitation
lsp
m
0
1
196
180
Time-integrated eastward turbulent surface stress
ewss
N m**-2 s
0
2
62
1
1

1

GG
.
ECMWF unit
.
181
Time-integrated northward turbulent surface stress
nsss
N m**-2 s
0
2
63
1

1

GG.
228144
205
Snowfall water equivalent
Runoff
sf
ro
kg
m
**-
2
0
201

1
1
53
GG.
ECMWF unit.
228
Total precipitation
tp
m
0
1
193
1

1
1
GG.
WMO
ECMWF unit.
144
Snowfall
sf
3062
Large-scale precipitation
lsp
kg m**-2
m of water equivalent1
0
1
198
54
1

1

GG.
ECMWF
WMO unit.
176
Surface net short-wave (solar) radiation
ssr
228143
Convective precipitation
cp
kg
J
m**-2
0
4
1
9
37
1

1

GG
177
Surface net long-wave (thermal) radiation
str
228144
Snowfall water equivalent
sf
kg
J
m**-2
0
5
1
5
53
1

1

GG.
169
Surface short-wave (solar) radiation downwards
ssrd
J m**-2
0
4
WMO unit.
228216
Accumulated freezing rain
fzra
m
0
1
194
1
7

1
1
GG.
175
Surface long-wave (thermal) radiation downwards
strd
ECMWF unit.
228228
Total Precipitation
tp
kg
J
m**-2
0
5
1
3
52
1

1

GG.
178
Top net short-wave (solar) radiation
tsr
WMO unit.
231001
Accumulated freezing rain water equivalent
fzrawe
kg
J
m**-2
0
4
1
9
67
8
1

1

GG.
179
Top net long-wave (thermal) radiation
ttr
WMO unit.
231002
Runoff water equivalent (surface plus subsurface)
rowe
kg
J 8
m**-2
2
0
5
5
42

1

GG.
WMO unit.

Maximum encodings

Fields on a single level or surface

Atmosphere

Time resolution: hourly Hourly max.

param Id	name	short Name	units	discipline	parameter Category	parameter Number	type Of First Fixed Surface	scale Factor Of First Fixed Surface	scaled Value Of First Fixed Surface	type Of Second Fixed Surface	scale Factor Of Second Fixed Surface	scaled Value Of Second Fixed Surface	type Of Statistical Processing	local Tables Version	comments
49	10 metre wind gust since previous post-processing	10fg	m s**-1	0	2	22	103	0	10				2		GG

Minimum encodings

There are no minimum encodings for this dataset.

...

The conversion between the base parameter, mean and accumulation is as follows for relevant parameters:

Inst paramId	Mean paramId	Accum paramId
...	...	...

Page tree

Versions Compared

Old Version 5

New Version Current

Key

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Wave

Wave

Ocean

Fields on pressure levels

Fields on model levels

Atmosphere

Fields on model levels

Atmosphere

Sea-ice/snow/soil

Sea-ice/snow/soil

Fields on height levels

Mean encodings

Fields on a single level or surface

Accumulated encodings

Fields on a single level or surface

Atmosphere

Maximum encodings

Fields on a single level or surface

Atmosphere

Minimum encodings

13	100							SH
156	Geopotential height	gh	gpm	0	3	5	100		GG
157	Relative humidity	r	%	0	1


75	Specific rain water content	crwc	kg kg**-1	0	1	85	105								GG. Not in official portfolio.
76	Specific snow water

.
181	Time-integrated northward turbulent surface stress	nsss	N m**-2 s	0	2	63	1						1		GG.

WMO unit.
231001	Accumulated freezing rain water equivalent	fzrawe	kg

WMO unit.
231002	Runoff water equivalent (surface plus subsurface)	rowe	kg

Page tree

Page History

Versions Compared

Old Version 5

New Version Current

Key

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Instantaneous encodings

Fields on a single level or surface

Atmosphere

Wave

Wave

Ocean

Fields on pressure levels

Fields on model levels

Atmosphere

Fields on model levels

Atmosphere

Sea-ice/snow/soil

Sea-ice/snow/soil

Fields on height levels

Mean encodings

Fields on a single level or surface

Accumulated encodings

Fields on a single level or surface

Atmosphere

Maximum encodings

Fields on a single level or surface

Atmosphere

Minimum encodings